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Total number of electrons in Cu atom havijng `m_(1)=0` :
A. 9
B. 13
C. 10
D. 6

1 Answer

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Correct Answer - b
Electronic configuraton of Cu (29)
`= 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p ^(6) 4s^(1) 3d^(10)`
` therefore m_(1) =0 "will be " =2+2+2+2+2+2+1+2=13`

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